Struct diesel::sql_types::Bool

source · 
pub struct Bool;
Expand description

The boolean SQL type.

On backends without a native boolean type, this is emulated with the smallest supported integer.

§ToSql impls

§FromSql impls

Trait Implementations§

source§

impl<'expr2, 'expr> AsExpression<Bool> for &'expr2 &'expr bool

source§

type Expression = Bound<Bool, &'expr2 &'expr bool>

The expression being returned
source§

fn as_expression(self) -> Self::Expression

Perform the conversion
source§

impl<'expr> AsExpression<Bool> for &'expr bool

source§

type Expression = Bound<Bool, &'expr bool>

The expression being returned
source§

fn as_expression(self) -> Self::Expression

Perform the conversion
source§

impl AsExpression<Bool> for bool

source§

type Expression = Bound<Bool, bool>

The expression being returned
source§

fn as_expression(self) -> Self::Expression

Perform the conversion
source§

impl Clone for Bool

source§

fn clone(&self) -> Bool

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
source§

impl Debug for Bool

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
source§

impl Default for Bool

source§

fn default() -> Bool

Returns the “default value” for a type. Read more
source§

impl FromSql<Bool, Pg> for bool

source§

fn from_sql(bytes: PgValue<'_>) -> Result<Self>

See the trait documentation.
source§

fn from_nullable_sql(bytes: Option<RawValue<'_, DB>>) -> Result<Self>

A specialized variant of from_sql for handling null values. Read more
source§

impl HasSqlType<Bool> for Pg

source§

fn metadata(_: &mut Self::MetadataLookup) -> PgTypeMetadata

Fetch the metadata for the given type Read more
source§

impl QueryId for Bool

source§

type QueryId = Bool

A type which uniquely represents Self in a SQL query. Read more
source§

const HAS_STATIC_QUERY_ID: bool = true

Can the SQL generated by Self be uniquely identified by its type? Read more
source§

fn query_id() -> Option<TypeId>

Returns the type id of Self::QueryId if Self::HAS_STATIC_QUERY_ID. Returns None otherwise. Read more
source§

impl SqlType for Bool

source§

type IsNull = NotNull

Is this type nullable? Read more
source§

impl ToSql<Bool, Pg> for bool

source§

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Pg>) -> Result

See the trait documentation.
source§

impl BoolOrNullableBool for Bool

source§

impl Copy for Bool

source§

impl SingleValue for Bool

Auto Trait Implementations§

§

impl Freeze for Bool

§

impl RefUnwindSafe for Bool

§

impl Send for Bool

§

impl Sync for Bool

§

impl Unpin for Bool

§

impl UnwindSafe for Bool

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> CloneToUninit for T
where T: Clone,

source§

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
source§

impl<ST, U, DB> CompatibleType<U, DB> for ST
where DB: Backend, ST: SqlType + SingleValue, U: FromSqlRow<ST, DB>,

source§

type SqlType = ST

source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> IntoNotNullable for T
where T: SqlType<IsNull = NotNull>,

source§

type NotNullable = T

The not nullable representation of this type. Read more
source§

impl<T> IntoNullable for T
where T: SqlType<IsNull = NotNull> + SingleValue,

source§

type Nullable = Nullable<T>

The nullable representation of this type. Read more
source§

impl<T> IntoSql for T

source§

fn into_sql<T>(self) -> AsExprOf<Self, T>
where Self: AsExpression<T> + Sized, T: SqlType + TypedExpressionType,

Convert self to an expression for Diesel’s query builder. Read more
source§

fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>
where &'a Self: AsExpression<T>, T: SqlType + TypedExpressionType,

Convert &self to an expression for Diesel’s query builder. Read more
source§

impl<T> ToOwned for T
where T: Clone,

source§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

source§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<ST> TypedExpressionType for ST
where ST: SingleValue,